Improved caster



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TO ALL WI-IQM IT MAY GONCERN:

Beit known that I, JAMES T. BARNES, ot' Hudson City,4 in the county of Hudson, and State of New Jersey, have invented a new and improved Caster; and that the following description, taken in connection with the accompanying drawings, hereinafter referred to, forms a full and exact specification of the same, wherein I have set forth the nature and principles of my said improvements, by which my invention may bc distinguished from all others of a similar class, together with suchparts as I claim and des-ire to have secured to me by Letters Patent. i

This invention relates to a new and useful improvementron a caster, for which Letters Patent were granted to me, bearing date October 30, 1866. j

' The invention consists in having the shank of thc caster at one side of the axis of the wheels, whereby the caster is allowed to turn so that the wheels, when the article to which they are applied is moved, may adjust themselves in line with the movement of the article. The invention also consists in a'novel manner of' securing the metal socket or sheath, in which ,the shank of the caster is iitted, in the leg or bottom of the article to which the caster is applied,`whereby the. Jsocket or sheath may be secured in the leg or bottom. of the article with the greatest facility. In the accompanying sheet of drawings- Figure 14 is a side sectional view of my invention, taken in-` the lino x x, fig. 2.

Figure 2, an end view of the same.

Figure 3, a horizontal section of the same, taken in the line y y, iig. 1.

Similar letters of reference indicate like parts. v l

t A represents the axis or axle o'f the caster, having a wheel, B, secured en each end `of it, in 'the mann-er as shown and described in the Letters. Patent previously granted to me. The axle has an arm, C, projecting horizontally from it, and in thelouter part ofsaid arm the lower end of a shank, D, is lirtnly secured, (see fig..

1.) By this means the shank, it will he seen, is out of line with or at one side ofthe axle A, and consequently the-wheels B B will be allowed to adjust themselves in line with the direction of the movement of the article to which the caster is applied, whenever said article is moved. iThis is an important feature of thc'im'provemcnt, and materially au'gments its value.Y E represents a metallic socket or sheath, which is inserted into the leg or bottom of the article to which the caster is applied. This socket or sheath is composed of a cylindrical tube,

. a, having a flange, b, at its lower end; and in to the ler or bottom of the article to"which the caster is to be applied there is bored a hole, c, to receive the cylindrical portion a of the socket or sheath,V (see fig. 1.) The cylindrical portion a is provided with spurs old, projecting laterally from it at opposite points; and 4the hole c is-grooved longitudinally, as shown at c c, to receive the spurs cl d and admit of a being shoved into the hole c.

When a is shoved into c the former is turned a'quarter of a revolution by grasping the ange b with a wrench; and the spurs cl d cut their way through the woodin a circumferential direction relatively with the hole c, and said spurs thereby retain the socket or sheath in the leg or bottom .of the article, and prevent, in case the article is raised from the iloor, the socket or sheath from dropping out of the hole c. Ry this simple means the socket or sheath may be veryreadily secured in the leg or bottom of the article to which the caster is applied. Itis superior to and less expensive than the screw-tube hitherto used, and far more reliable than the screwing of the vflange b tothe leg.

Having thus described my invention, I claim as new, and desire to secure by Letters Patent- 1. The axle A supporting two wheelsB, and having secured at its centre, and at richt angles thereto, the arm (l,- supporting the shank D, constructed as described, for the purpose specied. l l

2. I further claim the securing of the socket or sheath E in the legs,r or bottom of the article to which the caster is applied by means of the spurs d 0l, projecting laterally from the cylindrical part a and fitted in the hole c, which receives said part a, substantially as shown and described.

JAS. T. BARNES.

Witnesses WM. F. McNAMARA, ALEX. F. ROBERTS. 

